In the following year in an erased timeline, the Valiant was the base of operations for the Master. Martha's family (apart from Leo) and Captain Jack Harkness were imprisoned on the ship, as was the Doctor. It also held the paradox machine created from the Doctor's TARDIS. When the timeline was erased, the Valiant was the only point in space and time not to revert, instead moving directly through time, due to it being the "eye of the storm", that is, of the paradox machine. (TV: Last of the Time Lords)

At some point following the Dalek invasion, the Valiant was apparently salvaged and repaired, or replaced by another ship with the same name. The Twelfth Doctor asked whether he was being taken to the Valiant (mistakenly referring to the craft as "Cloudbase") during the Missy-initiated Cyberman attack on Earth, but Kate Stewart told him that doing so would be too obvious and too easy of a target. He was instead taken to an aircraft designated as Boat One. (TV: Death in Heaven)

According to non-narrative information in DWBIT 59, when the Earth was moved to the Medusa Cascade the Valiant took heavy damage from the Daleks. When it was forced over heavily populated areas, the decision was taken to land on empty farmland, avoiding a further loss of life. However, the attack still continued.

The Valiant makes a brief cameo in the crossover video game Lego Dimensions during the Back to the Future level, where it can be seen as one of the many objects thrust into 19th century Hill Valley.